“Selena knows all about the other girls that Justin has been within the past and most recently,” a source close to the couple told Hollywood Life, “but at the end of the day she isn’t at all worried about him reverting back to his old ways.”

In the three years since their last split, Justin has been linked to Sofia Richie, Kourtney Kardashian, and Kylie Jenner, and even though it could be slightly intimidating to think that Sel might have to compete for Justin’s love with any of his former flames, there’s one thing that Sel has with Justin that the rest of those ladies don’t have — history.

“He came back to her after all the time they’ve spent away from each other,” the insider told Hollywood Life. “Of course, Justin has spent time with many gorgeous women, but Selena trusts Justin to remain loyal to her in whatever capacity.”

Selena and Justin spotted leaving his hockey game in November 2017. (Photo Credit: Splash)

In a recent interview with Billboard just before she accepted the Woman of the Year award at the magazine’s annual Women in Music ceremony, Selena opened up about why she decided to give Justin another chance after all those years.

“I’m 25. I’m not 18, or 19, or 20. I cherish people who have really impacted my life,” Selena said. “So maybe before, it could have been forcing something that wasn’t right. But that doesn’t mean caring for someone ever goes away.”